God said, “This is the sign of the covenant that I make between me and you and every living creature that is with you, for all future generations:
You shall circumcise the flesh of your foreskins, and it shall be a sign of the covenant between me and you.
I have set my bow in the clouds, and it shall be a sign of the covenant between me and the earth.
God said to Noah, “This is the sign of the covenant that I have established between me and all flesh that is on the earth.”
The blood shall be a sign for you on the houses where you live: when I see the blood, I will pass over you, and no plague shall destroy you when I strike the land of Egypt.
It shall serve as a sign on your hand and as an emblem on your forehead that by strength of hand the Lord brought us out of Egypt.”
Now then, since I have dealt kindly with you, swear to me by the Lord that you in turn will deal kindly with my family. Give me a sign of good faith